16645261106056 has 32 divisors (see below), whose sum is σ = 34051454246880. Its totient is φ = 7565065718400.

The previous prime is 16645261106051. The next prime is 16645261106137. The reversal of 16645261106056 is 65060116254661.

It is a super-2 number, since 2×16645261106056² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16645261106051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11329485 + ... + 12714076.

It is an arithmetic number, because the mean of its divisors is an integer number (1064107945215).

Almost surely, 2^{16645261106056} is an apocalyptic number.

It is an amenable number.

16645261106056 is an abundant number, since it is smaller than the sum of its proper divisors (17406193140824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16645261106056 is a wasteful number, since it uses less digits than its factorization.

16645261106056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24051445 (or 24051441 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 16645261106056 in words is "sixteen trillion, six hundred forty-five billion, two hundred sixty-one million, one hundred six thousand, fifty-six".